1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
use std::collections::HashMap;
use wasm_bindgen::{closure::Closure, JsCast, JsValue};
#[derive(Clone, Debug)]
pub struct Routes<Ms: Clone + Sized + 'static> {
vals: HashMap<String, Ms>
}
impl<Ms: Clone + Sized + 'static>Routes<Ms> {
pub fn insert(&mut self, key: impl ToString, val: Ms) {
self.vals.insert(key.to_string(), val);
}
pub fn new(vals: HashMap<String, Ms>) -> Self {
Self { vals }
}
}
fn make_window() -> web_sys::Window {
web_sys::window().expect("Can't find the global Window.")
}
pub fn initial<Ms, Mdl>(app: crate::vdom::App<Ms, Mdl>, routes: Routes<Ms>) -> crate::vdom::App<Ms, Mdl>
where Ms: Clone + Sized + 'static, Mdl: Clone + Sized + 'static
{
let path = make_window().location().pathname().expect("Can't find pathname");
for (route, route_message) in routes.vals.into_iter() {
if &route == &path {
app.update_dom(route_message);
break;
}
}
app
}
pub fn update_popstate_listener<Ms, Mdl>(app: crate::vdom::App<Ms, Mdl>, routes: Routes<Ms>)
where Ms: Clone + Sized + 'static, Mdl: Clone + Sized + 'static
{
let window = make_window();
if let Some(ps_closure) = app.data.popstate_closure.borrow().as_ref() {
(window.as_ref() as &web_sys::EventTarget)
.remove_event_listener_with_callback("popstate", ps_closure.as_ref().unchecked_ref())
.expect("Problem removing old popstate listener");
}
let app_for_closure = app.clone();
let closure = Closure::wrap(
Box::new(move |event: web_sys::Event| {
let path = make_window().location().pathname().expect("Can't find pathname");
let path_trimmed = &path[1..path.len()].to_string();
if let Some(route_message) = routes.vals.get(path_trimmed) {
app_for_closure.update_dom(route_message.clone());
}
})
as Box<FnMut(web_sys::Event) + 'static>,
);
(window.as_ref() as &web_sys::EventTarget)
.add_event_listener_with_callback("popstate", closure.as_ref().unchecked_ref())
.expect("Problem adding popstate listener");
app.data.popstate_closure.replace(Some(closure));
}
pub fn push(path: &str) {
let history = make_window().history().expect("Can't find history");
let path = &(String::from("/") + path);
history.push_state_with_url(&JsValue::null(), "", Some(path))
.expect("Problem pushing state");
}